Treadle for sewing-machines



(No-Model.) 1 n J. SIGWALT, Jr;

TREADLE FOR SEWING MACHINES.

No. 256,171. Patented Apr. 11,1882.

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PATENT I Price...

1 JOHN SlGlVALT, JR, OF CHICAGO, ILLINOIS.

TREA DLE FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 256,171, dated April 11, 1882, Application filed August 2, 1881. (N0 model.)

siding at Chicago, in the county of Cook and State of Illinois, and a citizen of the United States,have invented new and useful Improvements in Treadles for Sewing- Machines, of which the following is a full description, reference being had to the accompanyiug drawings, in which-- Figure 1 is a top or plan view; Fig. 2,a side elevation; Fig. 3, a cross-section through the treadle, its support, and the tie-rod; Fig. 4, a longitudinal vertical section of the support; Fig. 5, a longitudinal section through the support or receptacle, showing the openings for the tie-rod, and the conical bearing-points by which the treadle is supported; Fig. 6, an end view of the support or receptacle, showing the openings for the tie-rod and the hearing-point; Fig. 7, a detail in section, showing the end of the center of the treadle,with the conical openingtherein to receive the conical bearing-point. Myinvention relates to that class of treadles for sewing or analogous machines in which a trough adjustably secured upon the fulcrum or tie rod serves to collect any oil that may drip from the lubricated bearings, said trough being provided at its ends with lugs or ears,which serve as hearings for thejournalsof the treadle.

The object of my invention is to simplify theconstruction and arrangement of the devices in such mechanism, the main feature of my improvement being that I form each ear or lug at the end of the trough with two holes, through one of which the tie-rod passes, the other upper holes being utilized for the-pivotpins. This, taken in connection with the arrangement of pivot-pins, constitutes my invention, as will be hereinafter fully described, and specifically pointed out in the claim.

In the drawings, A represents the body of the treadle; A, the arm of the treadle; A,

the wrist-pin or pivot for the pitman or connecting-rod; 13, the support for the treadle; C, the tie-rod for the legs; 0, the ends of the tie-rod which enter the openings in the legs; a, the bearing portion on the ends of the treadle at the center of. the body; b,the ears or lugs carrying the journals, pins, or pivots; c c, the

journals, pins, or pivots; d, thejam-nut; e, the

set-screws for holding the support B in position on the rod 0.

The treadle A may be made of cast-iron or other suitable material, which can be cast or otherwise formed into the shape shown, or

other desired shape, having a body formed open with a. solid center, having end l'accs, a, which can be provided with openings to receive the journals, pins, or pivots, the treadle also having an arm or extension, A, on which is a wrist pin orpivot, A, to which the lower end of the pitrnan or connecting-rod is attached,as usual.

The support B may be made of cast-iron or other material, which can be cast or otherwise formed into shape to have a semi -cylindrical bodyor mainportion, having at its ends lugs or ears I), which project up some distance above the plane of the body portion, which lugs or ears are provided witha circular opening for the passage of the tie-rod to mount the support B on such tie-rod. .The ends or ears b are provided with journals, pins, or pivots c 0, one of which, 0, is stationary, and may be formed 'with its end or ear I), ormay be independent and suitably secured to such end, lug, or ear, and the other, 0, is adjustable in its end piece or lug, I). As shown,its bodyis screw-threaded, and the opening therefor in the end or ear bis also screw-threaded, and it is held in place when adjusted by means of a jam-nut, d, located on the body of the pin or pivot c and working against the exterior face of the ear I). These journals, pins, or pivots are locatedin line with each other and at the proper height for-the treadle to clear the tie-rod O and support B and not be brought in contact therewith by the rocking movement of the treadle. The bearing ends of thejournals, pins, or pivots are conical in shape, and enter corresponding-shaped openings in the ends a of the center bar of the treadle. At each end of the support B is a set-screw, 0, the ends of which come in contact with the tie-rod (7., so that by setting this screw down the support will be tightly clamped on the tie-rod.

The tie-rod O is of the usual construction, its ends 0 entering and passing through the legs, and having on their ends screw-threads to receive nuts, by means of which the legs will be clamped between the ends of the shoulder formed by the body of the tie-rod and its ends, as usual. The support B is mounted on the tie-rod O by passing such tie-rod through the openings in theeuds or ears I), and is ad I be readily and accurately adjusted to give the justed on the tie-rod to bring the wrist-pin or pivot A in line with the pitnian or connectingrod, and when adjusted it is held rigidly in position, so as to bcimmovable on the tie-rod, by means of the set-screws e.

The treadle is mounted on its journals, pins, or pivots between the ends or ears b by inserting thejournal, pin, or pivot c in the opening therefor in the end a, and then advancing the journal, pin, or pivot c by means of the screwthread thereon, so that its end will enter opening therefor in the end a, in which positionit will be held and locked by bringing the jamnut 61 in contact with the exterior face of the end or ear I). This journal, pin, or pivot 0 can treadle a firm and easy bearing, and when the journals, pins, or pivots become worn in use this journal, pin, or pivot 0 can be advanced to take up such wear by unloosening 'thejanJ-nut d and turning the journal, pin, or pivot to advance it. When advanced it can be locked and held in position by thejam-nut. By thus making one of the journals, pins, or pivots for the treadle adjustable it will be seen that the treadle can be given a precise degree of hearing contact to have it rock easily, and that the journal, pin, or pivot can be adjusted so as to prevent end-play ot' the treadle.

. ThesupportBcan be adjusted longitudinally to bring the treadle-arm in line with the pitman or rod by moving it lengthwise on the tierod (Land it can also be adjusted transversely by turning it on the tie-rod so that its ends or ears I) can stand at any angle, forward or back, to bring the journals, pins, or pivots c c at the proper point to give the treadle the required throw for the length of the pitman or connecting-rod and in proper relation to the feet of the operator.

The support B, by having a semi-cylindrical shape, forms a cup or receptacle into which the drip or overflow of the oil or other lubricant from the treadle-bearin gs will be deposited and caught, thereby preventing injury to the earpet or floor from such drip. By this form of support B a bearing for the treadle is provided which can beadjusted to any desired point to insure a perfect operation of the treadle, and this hearing being independent of the legs, the spread of the legs will not affect the position of the treadle in its bearings or cause the bearin gs to spread apart and disconnect the treadle from itsjournals, pins, or pivots, or interfere in any manner with the relation of the journals, pins, or pivots to the bearing ends of the treadle, so that the treadle is always insureda firm and reliable support on its bearings, which bearings are also capable of adjustment to take up any end-play of the treadle caused by wear or otherwise.

What I claim as new, and desire to secure by Letters Patent, is-

The combination, with the support 13, provided with the end lugs, b, of the tie-rod passing through the said lugs, and the treadle A, journaled between the lugs of the support by thejournal-pins 0 c, passing through the lugs above the tie-rod, one of said pins being fixed and the'other adapted to work through a screwthreaded opening in the lug, ajam-nnt being fitted upon the outer end ofthe screw-threaded pin, and the support being held by set-screws upon the tie-rod, substantially as described.

JOHN SIGWALT, JR.

Witnesses:

ALBERT H. ADAMS, O. W. BOND. 

